CN113526593B

CN113526593B - Industrial three-effect salt-containing wastewater evaporation crystallizer and pressure balancing method

Info

Publication number: CN113526593B
Application number: CN202110869539.0A
Authority: CN
Inventors: 董春
Original assignee: Jiangsu World Top Thermal Technology Co ltd
Current assignee: Jiangsu World Top Thermal Technology Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2023-05-02
Anticipated expiration: 2041-07-30
Also published as: CN113526593A

Abstract

The invention relates to the technical field of water treatment and discloses an industrial three-effect salt-containing wastewater evaporative crystallizer and a pressure balancing method, wherein the industrial three-effect salt-containing wastewater evaporative crystallizer comprises a pipeline, two sides of the pipeline are respectively and fixedly connected with an evaporator, the outside of the pipeline is fixedly connected with an outer pipe wall, one side of the outer pipe wall is movably connected with a one-way pressure release valve, one side of the one-way pressure release valve is movably connected with a movable plate, the inside of the outer pipe wall is fixedly connected with a partition board I, and the top end of the partition board I is fixedly connected with a one-way pressure valve I. Through the cooperation of two-way pressure valve and pipeline middle part through-hole, carry out the steam storage of steam pressure department and the steam supply of pressure department excessively low in the outside of whole pipeline when making equipment normal use to balanced whole pipeline pressure makes steam volume supply even, and the outer tube wall can provide the heat preservation for the pipeline outside, avoids the pipeline to cause the unbalanced problem of pipeline internal pressure because of ambient temperature.

Description

Industrial three-effect salt-containing wastewater evaporation crystallizer and pressure balancing method

Technical Field

The invention relates to the technical field of water treatment, in particular to an industrial three-effect salt-containing wastewater evaporation crystallizer and a pressure balancing method.

Background

The three-effect salt-containing wastewater evaporation crystallizer is used for evaporating feed liquid under the vacuum negative pressure condition, the boiling point of the feed liquid is reduced under the vacuum negative pressure condition, and the generated water vapor can be rapidly condensed or discharged, so that the evaporation speed is higher, when the device is operated, through the action of an external circulating pump, the secondary vapor generated by the first effect can be used as a heating medium of the second effect heater, the secondary vapor of the second effect is used as a heating medium of the third effect heater, the heat energy is fully utilized, so that the energy consumption of boiler steam is saved, the operation cost of the device is reduced, the unused secondary vapor enters a condenser, is condensed into liquid under the action of external circulating cooling water, is finally discharged by a pump, and the condensed water is recycled, so that the evaporation concentration process is completed.

When the steam is conveyed in the pipeline, the steam pressure in the pipeline is uneven due to the influence of the length of the pipeline and the external environment temperature of the pipeline, so that the steam quantity is supplied unevenly to influence the wastewater treatment rate, and when the environment temperature is lower, the steam condensation increases the energy consumption of the heater and reduces the energy utilization rate; when the equipment runs, the circulating pump breaks down in the using process, and at the moment, steam is retained in the pipeline and is easy to flow reversely, so that the conveying difficulty of the circulating pump after the self fault elimination is improved, and the energy consumption is increased; when the whole internal steam is too high, the vacuum degree in the equipment can be reduced, the evaporation and crystallization rate of the salt-containing wastewater is influenced, and the crystallization crystal quality is influenced.

Disclosure of Invention

Aiming at the defects of the existing three-effect wastewater evaporative crystallizer in the use process, the invention provides the industrial three-effect salt-containing wastewater evaporative crystallizer and a pressure balancing method, which have the advantages of balancing pressure and reducing energy consumption, and solve the technical problems in the background technology.

The invention provides the following technical scheme: the utility model provides an industry three-effect salt wastewater evaporation crystallizer, includes the pipeline, the both sides of pipeline are fixedly connected with evaporimeter respectively, the outside fixedly connected with outer tube wall of pipeline, one side swing joint of outer tube wall has a one-way relief valve, one side swing joint of one-way relief valve has the fly leaf, the inside fixedly connected with baffle I of outer tube wall, the top fixedly connected with one-way pressure valve I of baffle I, the inside fixedly connected with of outer tube wall is located baffle II of baffle I one side, the inside of pipeline is located baffle II one side equidistance and leaves and be equipped with the through-hole, the top fixedly connected with one-way pressure valve II of baffle II, one side fixedly connected with drive plate of one side fixedly connected with of one side II of baffle, and the pipeline passes through movable groove and drive plate swing joint, the bottom swing joint of drive plate has the collecting plate, the inside equidistance fixedly connected with two-way pressure valve of collecting plate, swing joint has the piston body between baffle I and the baffle II, outside fixedly connected with spring I of piston body, one side fixedly connected with spring II, one side of piston body is equipped with spring II, and spring fixedly connected with II through the groove.

Preferably, the diameter of the through hole formed in one side of the partition plate II of the pipeline is the same as that of the bidirectional pressure valve, and the horizontal distance between one side of the through hole and one side of the bidirectional pressure valve is twice the diameter of the pipeline.

Preferably, the number of the outer pipe walls is four, and the bottom ends of the four outer pipe walls are respectively and fixedly connected with the upper, lower, left and right sides of the pipeline.

Preferably, the pressure value of the one-way pressure valve I is equal to the normal use pressure value of the equipment, and the pressure value of the one-way pressure valve II is twice as great as the pressure value of the one-way pressure valve I.

Preferably, when the internal pressure of the one-way pressure release valve, the one-way pressure valve I and the two-way pressure valve reaches twice the normal use pressure value of the equipment, the piston body moves by one half of the diameter of the pipeline.

Preferably, the top end of the closing plate is hinged with one half of the height of the piston body, and the shape of the closing plate is a quarter circle.

Preferably, one side of the collecting plate and the bottom end of the movable plate are opposite magnets with magnetic attraction.

The pressure balancing method of the industrial three-effect salt-containing wastewater evaporative crystallizer comprises the following operation steps:

s1, introducing steam from one side of a pipeline, and introducing the steam between a partition board I and a partition board II through a one-way pressure valve I;

s2, steam between the partition board I and the partition board II pushes the piston body to move towards the inner side of the pipeline, so that the hinged sealing plate at one side rotates and releases steam under the action of steam thrust, meanwhile, the steam pressure between the partition board I and the partition board II is increased and is introduced into the other side of the outer pipe wall through the one-way pressure valve II, and the one-way pressure valve II enables the transmission plate to move to drive the collecting plate to move towards the other side;

s3, the lateral pressure in the outer pipe wall is increased, more steam is released through the one-way pressure release valve, the steam pushes the movable plate to move, and accordingly the integrated plate is pushed to move to the other side again, the two-way pressure valve is aligned with the through hole in the pipeline, and therefore the vapor pressure in the pipeline is balanced through the two-way pressure valve and the outer pipe wall;

s4, when the circulating pump fails, steam stops, the closing plate rotates to one side under the elastic action of the spring II, and the piston body moves upwards, so that one side channel of the pipeline is closed, namely, backflow is prevented.

The invention has the following beneficial effects:

1. according to the invention, the bidirectional pressure valve is matched with the through hole in the middle of the pipeline, so that when the device is normally used, steam storage at the position with too high steam pressure and steam supply at the position with too low steam pressure are performed outside the whole pipeline, so that the pressure of the whole pipeline is balanced, the steam quantity is uniformly supplied, the outer pipe wall can provide a heat insulation layer for the outer side of the pipeline, and the problem of unbalanced pressure inside the pipeline due to the ambient temperature of the pipeline is avoided.

2. According to the invention, through the fault of the circulating pump, the steam delivery is stopped, and no steam thrust is acted, so that one side of the pipeline, into which steam is introduced, is closed through the spring I, the steam is prevented from flowing back, the energy consumption is reduced, and the wastewater treatment cost is reduced.

3. When the pressure of the whole steam is too high, the invention can store the redundant steam by leading the two-way pressure valve into the inner part of the outer pipe wall, reduce the thermodynamic loss after the redundant steam is condensed, avoid the damage of the vacuum state and improve the evaporation and crystallization rate of the salt-containing wastewater and the crystallization crystal quality.

Drawings

FIG. 1 is a schematic elevation view of the structure of the present invention in a cut-away;

FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to the present invention;

fig. 3 is an enlarged schematic view of a partial structure of the present invention.

In the figure: 1. a pipe; 2. an evaporator; 3. an outer tube wall; 4. a one-way pressure release valve; 5. a movable plate; 6. a partition board I; 7. a one-way pressure valve I; 8. a partition II; 9. a one-way pressure valve II; 10. a drive plate; 11. a collecting plate; 12. a two-way pressure valve; 13. a piston body; 14. a spring I; 15. a spring II; 16. and a closing plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, an industrial three-effect salt-containing wastewater evaporative crystallizer comprises a pipeline 1, wherein two sides of the pipeline 1 are respectively and fixedly connected with an evaporator 2, the outside of the pipeline 1 is fixedly connected with an outer pipe wall 3, the number of the outer pipe walls 3 is four, the bottom ends of the four outer pipe walls 3 are respectively and fixedly connected with the upper, lower, left and right sides of the pipeline 1, one side of the outer pipe wall 3 is movably connected with a one-way pressure release valve 4, one side of the one-way pressure release valve 4 is movably connected with a movable plate 5, the inside of the outer pipe wall 3 is fixedly connected with a partition plate I6, the top end of the partition plate I6 is fixedly connected with a one-way pressure valve I7, the inside of the outer pipe wall 3 is fixedly connected with a partition plate II 8 positioned on one side of the partition plate I6, through holes are formed in the inside of the pipeline 1 and are equidistantly separated from one side of the partition plate II 8, the top end of the partition plate II 8 is fixedly connected with a one-way pressure valve II 9, one side fixedly connected with drive plate 10 of one side of check pressure valve II 9, the inside movable groove that has seted up in one side that is located baffle II 8 of pipeline 1, and pipeline 1 passes through movable groove and drive plate 10 swing joint, the bottom swing joint of drive plate 10 has collecting plate 11, the opposite magnetic attraction's of one side of collecting plate 11 and the bottom of fly leaf 5 opposite magnetic, the inside equidistance fixedly connected with two-way pressure valve 12 of collecting plate 11, swing joint has piston body 13 between baffle I6 and the baffle II 8, the outside fixedly connected with spring I14 of piston body 13, the groove has been seted up to one side of piston body 13, and piston body 13 passes through groove fixedly connected with spring II 15, the opposite side fixedly connected with closing plate 16 of spring II 15, the top of closing plate 16 is articulated with the half department of piston body 13 height, the shape of closing plate 16 is quarter circular.

The diameter of the through hole formed in one side of the partition plate II 8 of the pipeline 1 is the same as that of the bi-directional pressure valve 12, and the horizontal distance between one side of the through hole and one side of the bi-directional pressure valve 12 is twice the diameter of the through hole, so that the sealing plate 16 is opened to be filled with steam, and the balance steam of the bi-directional pressure valve 12 is carried out after the internal steam of the outer pipe wall 3 is filled with the steam, the operation accuracy of the device is improved, and the problem that the gas to be evaluated is not steam is avoided.

The pressure value of the one-way pressure valve I7 is the normal use pressure value of the equipment, the pressure value of the one-way pressure valve II 9 is twice the pressure value of the one-way pressure valve I7, so that the steam pressure between the partition plate I6 and the partition plate II 8 enables the piston body 13 to move to open the sealing plate 16, and the automation degree of the device is improved.

When the internal pressures of the one-way pressure release valve 4, the one-way pressure valve I7 and the two-way pressure valve 12 reach twice the normal use pressure value of the equipment, the piston body 13 moves by one half of the diameter of the pipeline 1, the moving distance of the piston body 13 is set, and steam is led into the outer pipe wall 3 to open the sealing plate 16 in the operation process.

s1, steam is introduced from one side of a pipeline 1 and is introduced between a partition board I6 and a partition board II 8 through a one-way pressure valve I7;

s2, steam between the partition plate I6 and the partition plate II 8 pushes the piston body 13 to move towards the inner side of the pipeline 1, so that the hinged closing plate 16 at one side rotates and releases steam under the action of steam thrust, meanwhile, the steam pressure between the partition plate I6 and the partition plate II 8 is increased and is introduced into the other side of the outer pipe wall 3 through the one-way pressure valve II 9, and the one-way pressure valve II 9 enables the transmission plate 10 to move to drive the integrated plate 11 to move towards the other side;

s3, the pressure increase on the inner side of the outer pipe wall 3 releases more steam through the one-way pressure release valve 4, the steam pushes the movable plate 5 to move, and accordingly the integrated plate 11 is pushed to move to the other side again, the two-way pressure valve 12 is aligned with the through hole in the pipeline 1, and therefore the vapor pressure in the pipeline 1 is balanced through the two-way pressure valve 12 and the outer pipe wall 3;

s4, when the circulation pump fails, steam stops, the spring II 15 elastically acts to enable the closing plate 16 to rotate to one side, and the piston body 13 moves upwards, so that one side channel of the pipeline 1 is closed, namely, backflow prevention is achieved.

The application method (working principle) of the invention is as follows:

during normal use, the whole equipment is vacuumized, secondary steam which is led out through the evaporator 2 passes through the inside of the pipeline 1, one side of the piston body 13, namely one side of the sealing plate 16, is gathered, after the pressure reaches the rated pressure of the equipment, the one-way pressure valve I7 is opened, steam is led into the space between the baffle I6 and the baffle II 8, and the piston body 13 is pushed to move towards the inside direction of the pipeline 1, meanwhile, secondary steam pushes the piston body 13 and the sealing plate 16 on one side of the inside piston body 13 and the sealing plate 16 of the pipeline 1, the piston body 13 moves inwards to enable the hinged position of the piston body 13 and the sealing plate 16 to move out between the baffle I6 and the baffle II 8, the sealing plate 16 is pushed to rotate towards the other side, so that secondary steam is released towards the other side of the pipeline 1, and after the piston body 13 moves to the half of the diameter of the pipeline 1, the steam pressure between the baffle I6 and the baffle II 8 reaches twice the normal working pressure, namely the one-way pressure valve II 9 is opened to release redundant secondary steam inside the other side of the outside pipeline 3, and the transmission plate 10 is pushed to move towards the other side, and the transmission plate 11 is pushed towards the other side, so that the inside of the outside pipeline 3 is pushed to move upwards, namely the inside the pipeline 3 is full of the two-way pressure valve 12, and the inside the pipeline is opened, and the two-way pressure valve is opened, and the inside the pipeline is opened, and the pressure valve is opened, and the inside the pressure valve is opened, and the pressure is opened.

Before the circulation pump trouble, piston body 13 and closure plate 16 receive the thrust of steam, the thrust of gas between baffle I6 and the baffle II 8 and the elasticity of spring I14 spring, and reached the equilibrium of force, when the interior steam of piston body 13 does not circulate and lets in, after the circulation pump trouble, because of the thrust disappearance of steam circulation, the unbalanced force, spring I14 can promote piston body 13 and upwards move, closure plate 16 rotates to one side and hugs closely piston body 13 simultaneously under the effect of spring II 15, make the inside pressure between baffle I6 and the baffle II 8 increase, discharge the steam between baffle I6 and the baffle II 8 through check pressure valve II 9, close closure plate 16 simultaneously, thereby the direction of steam backward flow closes.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An industrial three-effect salt-containing wastewater evaporative crystallizer comprises a pipeline (1), and is characterized in that: the utility model discloses a pipeline, including pipeline (1) and piston body (13) and connecting rod, the both sides of pipeline (1) are fixedly connected with evaporimeter (2) respectively, the outside fixedly connected with outer tube wall (3) of pipeline (1), one side swing joint of outer tube wall (3) has one-way relief valve (4), one side swing joint of one-way relief valve (4) has fly leaf (5), the inside fixedly connected with baffle I (6) of outer tube wall (3), the top fixedly connected with one-way pressure valve I (7) of baffle I (6), the inside fixedly connected with of outer tube wall (3) is located baffle II (8) on one side of baffle I (6), the inside equidistance of being located baffle II (8) is left and is equipped with the through-hole, the top fixedly connected with one-way pressure valve II (9) of baffle II (8), one side fixedly connected with driving plate (10) of one side swing joint of one-way pressure valve II (9), the inside of pipeline (1) is seted up the fly leaf and is passed through the fly leaf and driving plate (10) swing joint, the bottom fixedly connected with baffle II (11) of driving plate (10) and piston body (8) have two-way pressure valve (12) to gather between the inside the baffle I and piston body (13), the outer side of the piston body (13) is fixedly connected with a spring I (14), one side of the piston body (13) is provided with a groove, the piston body (13) is fixedly connected with a spring II (15) through the groove, and the other side of the spring II (15) is fixedly connected with a sealing plate (16);

when the internal pressure of the one-way pressure release valve (4), the one-way pressure valve I (7) and the two-way pressure valve (12) reaches twice the normal use pressure value of the equipment, the piston body (13) moves by one half of the diameter of the pipeline (1);

the top end of the closing plate (16) is hinged with one half of the height of the piston body (13), and the shape of the closing plate (16) is in a quarter circle shape.

2. An industrial three-effect salt-containing wastewater evaporative crystallizer as in claim 1, wherein: the diameter of a through hole formed in one side of the partition plate II (8) of the pipeline (1) is the same as that of the bi-directional pressure valve (12), and the horizontal distance between one side of the through hole and one side of the bi-directional pressure valve (12) is twice the diameter of the pipeline.

3. An industrial three-effect salt-containing wastewater evaporative crystallizer as in claim 1, wherein: the number of the outer pipe walls (3) is four, and the bottom ends of the four outer pipe walls (3) are fixedly connected with the upper part, the lower part, the left part and the right part of the pipeline (1) respectively.

4. An industrial three-effect salt-containing wastewater evaporative crystallizer as in claim 1, wherein: the pressure value of the one-way pressure valve I (7) is equal to the normal use pressure value of the equipment, and the pressure value of the one-way pressure valve II (9) is twice the pressure value of the one-way pressure valve I (7).

5. An industrial three-effect salt-containing wastewater evaporative crystallizer as in claim 1, wherein: one side of the collecting plate (11) and the bottom end of the movable plate (5) are opposite magnets with magnetic attraction.

6. The pressure balancing method of the industrial three-effect salt-containing wastewater evaporative crystallizer according to claim 1, comprising the following operation steps:

s1, introducing steam from one side of a pipeline (1) and introducing the steam between a partition board I (6) and a partition board II (8) through a one-way pressure valve I (7);

s2, steam between the partition board I (6) and the partition board II (8) pushes the piston body (13) to move towards the inner side of the pipeline (1), so that the hinged closing plate (16) on one side rotates and releases steam under the action of steam thrust, meanwhile, the steam pressure between the partition board I (6) and the partition board II (8) is increased and is introduced into the other side of the outer pipe wall (3) through the one-way pressure valve II (9), and the one-way pressure valve II (9) enables the transmission plate (10) to move to drive the integration plate (11) to move towards the other side;

s3, the pressure inside the outer pipe wall (3) is increased, excessive steam is released through the one-way pressure release valve (4), the steam pushes the movable plate (5) to move, and accordingly the integrated plate (11) is pushed to move to the other side again, the two-way pressure valve (12) is aligned with the through hole inside the pipeline (1), and accordingly the balance of the steam pressure inside the pipeline (1) is achieved through the two-way pressure valve (12) and the outer pipe wall (3);

s4, when the circulating pump fails, steam stops, the spring II (15) elastically acts to enable the closing plate (16) to rotate to one side, and the piston body (13) moves upwards, so that one side channel of the pipeline (1) is closed, namely, backflow is prevented.